package com.ouyu.domain;

import java.util.HashMap;
import java.util.Map;

/**
 * <pre>
 * @Author: OuYu
 * @Date: 2021/8/15 14:55
 * @Description:
 * </pre>
 */
public class UserDao {
    private static Map<String, String> hashMap = new HashMap<>();
    static {
        hashMap.put("0001", "OO");
        hashMap.put("0002", "YY");
        hashMap.put("0003", "GG");
    }

    public String queryUserName(String uId) {
        return hashMap.get(uId);
    }
}
